Indeed. If you look at a light bulb package at the store go with a daytime color, not soft yellow or anything yellow. They will all have the temperature they burn at displayed in kelvin. 5000K-6500k is a typical daylight spectrum which is what you want to promote tight nodes and and great cellular growth.
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Exactly! I didn't even mention it's the wrong spectrum.
Yellow will make your stems stretch and do little to nothing for the leaves.